#include <stdio.h>

#define PRINT
#define M 100

int main()
{
  printf("hello world\n");
  printf("hello world\n");
  printf("hello world\n");
  printf("hello world\n");



  printf("hello M:%d\n",M);
  
  printf("hello world start\n");
 // printf("hello world\n");
 // printf("hello world\n");
 // printf("hello world\n");
 // printf("hello world\n");
 // printf("hello world\n");
 // printf("hello world\n");
  printf("hello world end\n");

#ifdef PRINT 
  printf("hello PRINT\n");
#else 
  printf("hello None\n");
#endif
  return 0;
}
